Scaptognathus pusillus Bartsch, 1982

Abé, Hiroshi, 2021, Taxonomic review of the subfamily Lohmannellinae (Acari: Trombidiformes Halacaridae) with morphological comparisons among genera, Zootaxa 4980 (2), pp. 201-255 : 235

Scaptognathus pusillus Bartsch, 1982

Diagnosis. Glp-1 posterior to Ds-1. Ds-2 on AD. PE with 1 dorsal seta. GA bipartite in female. Female with 4 Pgs and 4 Sgs. Tr I–IV with 1-1-?-1 setae; Bf I–IV with 1-2-?-1 setae; Tf I–IV with 6-5-?-3 setae, (3,4)-0-0-0 Bp setae; Gn I–IV with 5-4-?-3 setae, 2-1-0-0 Bp setae; Tb I–IV with 9-7-?-7 setae, 6-4-3-4 Bp setae; Ta I–IV with 4- 4-?-3 dorsal setae, 1-1-0-0 Bp setae. Lc I smooth. Idiosoma length 188 in female (holotype). Idiosoma width 172 in female (holotype). Gnathosoma length 162 in female, 150 ( idiosoma length 204) in male. Gnathosoma width 95 ( gnathosoma length 174) in female (holotype). Ratio of gnathosoma to idiosoma 0.86.

Remarks. The species is distinguished from congeners by having the Ds-2 on AD and 3 or 4 Bp setae on Tf I. Female and LV are known.

Habitat. Bathyal zone: Sediment at 450 m depth.

Distribution. Indian Ocean: 12º29’S, 45º02’E ( Mozambique Channel) [ Mozambique].

References. Abé (1990c), Abé & Green (1994), Bartsch (1982c), Chatterjee & Sarma (1991).

Depository. MNHNP.